6 Lines Sedoka (旋頭歌 whirling head poem) is in many ways the same verse form as the Mondo or 2 Katuata. However the Sedoka is written by 1 poet and rather than question-answer, the 2 stanzas are often parallels. This verse can be found as far back as the 6th century.
The elements of Sedoka are:
1. 2 stanzas of 3 lines each, 19 syllables or less, often 5-7-7, sometime 5-7- 5 is used for each stanza.
2. the stanzas should parallel each other.